Burner for oil-burning furnaces



March 31,1925. 1 1,531,421

w. E. SHORE v BURNER FOR OIL BURNING FURNACES I Filed July 31 1922Patented Mar. 31, 1925. 1,531,421 UNITED STATES PATENT OFFICE,

WILLIAM E. SHORE, OF NEW YORK, N. Y.

- BURNER FOR OIL-BURNING FURNACES.

Application filed July 31, 1922. Serial No. 578,646.

To all whom it may concern:

Be it known that I, WILLIAM E. SHORE, a subject of the King of GreatBritain, and resident of the city and State of New York, in the UnitedStates of America, have invented certain new and useful Improvements inBurners for Oil-Burning Furnaces, described in the followingspecification and illustrated in the accompanying drawings, that formpart of the same.

The principal objects of this invention are, to enable the burning of anebulized oil fuel without the deleterious effect of coking in thenozzle and to ensure the complete combustion of thefuel producing thehighest possible temperatures.

The principal feature of the invention consists in conducting thenebulized fuel through a tubular conduit to a diverging heated memberand directing aflow of air to effectively insulate the delivery conduitfrom said heated member whereby the nebulized fuel is discharged fromthe conduit into the diverging member to effect the expansion thereofprior to its combustion.

In the drawings, Figure 1 is a longitudinal section of my improvedburner taken on the line 11 of Figure 2.

Figure 2 is a transverse sectional view of the nozzle taken on the line22 of Figure 1.

Many different forms of devices have been conceived for atomizing fueloils and in practically all instances the fuel is projected directlyinto the combustion chamber from an atomizing nozzle. The presentinvention is herein shown as applied to a conduit conducting nebulizedfuel to the combustion chamber, the means for nebulizing the fuel notbeing shown as this invention is separate from such. nebulizing means.

In the construction herein shown the tubular conduit 1 leads from asuitable nebulizing apparatus and discharges the nebulized fuel from theopen end 2.

Surrounding the conduit 1 is a cylindrical member 3 spaced therefrom bythe longitudinal webs 4 supported on the collars 5 and 6 encircling theconduit. The member 3 is open at both ends so that the air will flowreadily therethrough.

The collar 6 is formed with a conical outward end 7 which intercepts thelongitudinal flow of air from the opposite end of the member 3 divertingit in an outward direction.

The supporting webs 4 extend beyond the tain amount collar-6 and coneend 7 and support a conical-shaped member 8' which is spaced from thecone end 7 but forms a continuation .thereof. The space between themembers 7 and 8 forms an air port 9 which preferably flares outwardly,that'is, toward the outer side of the cone and in the direction of themember 3 and is thus open to receive a cerof air flowing through themember 3.

Longitudinal slots 10 are formed in the member 8 to admitfurthersupplyof air.

In the use of this device the conduit 1 is connected with a suitableform of' nebulizer and the nebulized fuel isfo'rced therethrough, beingdischarged at the end 2 into the combustion chamber of the furnace. Themember 8 extends into the combustion chamber of the furnace and thecylindrical portion 3 extends through the furnace wall and forms an airduct to direct a flow of air into the furnace around the member 8. Thenatural draught of the furnace creates a strong flow of air through thecylindrical member 3 which thus absorbs the majority of the heattransmitted to the conduit 1 from the incandescence of the combustionchamber and this occurs to such an extent that coking of the fuels inpassage through the conduit is absolutely avoided.

The combustion of the nebulized fuel is very greatly enhanced by thearrangement of the cone member 8. The rush of air through thecylindrical member 3 is directed in an outward direction by the surfaceof the cone and such flow of air past the larger end of the cone createsa suction which causes the nebulized fuel discharged from the conduit 1to expand. This action is greatly assisted by the incandescent heat ofthe combustion chamber and the flame and air is mixed with the nebulizedfuel by passing through the port 9 and the slots 10. The cone member 8will naturally become very hot owing to its proximity to the flame butit is insulated from the member 7 and therefore from the members 1 and 3by the air port 9. The conduit will therefore be maintained at acomparatively low temperature and such as will not cause coking of thefuel.

The result of the use of a device such as described is that a very lowgrade of fuels may be used without danger and they will maintain aconstant condition of temperature.

3 a flow of What Lolaim 'asx'my invention. is

1. In burner for oil 'burningfurn'aces, the combination with the furnacefront having an opening therethrough, of-adelivery conduit for directingvaporized fuel through said opening, a conical:membenhavingv its smallercircular end engaging the delivery end of said delivery conduit andflaring outwardly and extending into the combustion chamber, "the'smaller end of said conduit being insulated from the largerend-to'obviatej the transference of a coki ngfheat to the delivery]conduit, and a conduit encircling said delivery conduit ariddirectingair against "the exterior ofsa-id "conical member.

"2. In a burner for oil burning furnaces the combination with thefurnace'front 1ming an opening therethrough, of a cylindrical memberarranged said opening being'open at the ends'and havingradial-longitudinal webs extending-inwardly, collars supported by saidwebs, "fuel "discharge tube supported in said collars, and afiaringconical member.-

of the fuel In a burner gfOI' oil burning furnaces,

the combination with the furnace front having-an opening therethrough,of a cylindrical member open at the ends arranged in said opening and'l1aving inwardly extending radial Webs, a "collar supported by 'saidWebs at-"the inner {end havinga conical flare adapted'to direct the flowof air outwardly, a conic'al 'shaped member spaced from said "conicalmember and supported by the forwvardly to projectinto the combustionchamber and *having a plurality of extending radial webs and adaptedlongitudinal slots therein, and afueh'vapor supply-pipesupqported infsa'id collar and dischargingvapor fuelf- 'into the conical "extensionsfrom said "collar.

WILLIAM E. SHORE.

